Hello,

I have a duraglas pump that I have gone through about 4 or 5 motors with in 6 years. I just installed another new one yesterday. I always have a leak problem, though I always install new seals. I have watched multiple youtube videos and looked up various pump manuals (including my own) to ensure I am installing it the right way. It leaks between the motor itself and the back plastic housing. Could it be anything at all besides the seal? I have verified on http://www.ussealmfg.com/ that it's the correct one for my pump with the part number from the manual. from this image the leak is behind part #5 and in front of part #4.
http://cf.mp-cdn.net/56/45/1c45e5187...1e264b3fa1.jpg
it does not leak when the motor is off, and the water stays full in the pump basket area.

Thanks.